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The HRT4-B is a battery powered electronic
room thermostat designed to provide optimum
comfort with close control of the energy used to
heat the home.
The HRT4-B will only operate when 2 x AAA
batteries have been fitted and the thermostat is
wired into your central heating system.
Installation and connection of the HRT4-B
must be carried out by a suitably qualified
person.
WARNING: ISOLATE MAINS SUPPLY BEFORE
COMMENCING INSTALLATION.
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